Communicating with the ABB Model REF615 Protection relays with Modbus TCP/IP comms?

Can you look at the instruction manual for the ABB Model REF615? Are there any idiosyncrasies with the Modbus protocol implemented by that device?

I'd recommend using a 3rd party Modbus Client Test Tool, to query your device. Start with just one 40000x register at first. Then expand the size of registers queried. See if there is some limit.

Also, the MODNET driver, to initialize, will query I believe 00000x register. If this doesn't exist in the device, it won't come online. There is a parameter to adjust that register as required. Please consult the Modnet driver help for more information.

Can you look at the instruction manual for the ABB Model REF615? Are there any idiosyncrasies with the Modbus protocol implemented by that device?

I'd recommend using a 3rd party Modbus Client Test Tool, to query your device. Start with just one 40000x register at first. Then expand the size of registers queried. See if there is some limit.

Also, the MODNET driver, to initialize, will query I believe 00000x register. If this doesn't exist in the device, it won't come online. There is a parameter to adjust that register as required. Please consult the Modnet driver help for more information.

Hi Olivier,

thanks for the response, i am Happy to report i solved this issue, the problem was in the device config not the SCADA... it had a Enable/Disable toggle for "modbus server", by default it was set for disable. strangely i could ping the device and there was no hardware errors, but the device just did not send the response.